United Kingdom ▼
Products > Parts > Microphone

Noise Measurement Microphones - Class 1 and Class 2

Noise Measurement Microphone
Noise Measurement Microphone

Features

  • International standard 1/2" microphone capsule
  • Pre-polarised electret condenser technology
  • Long term stability & reliability
  • High accuracy

Applications

  • For Class 1 and Class 2 sound level meters
  • Outdoor noise monitors
  • Ideal for Cirrus range of meters

Ordering

MK216 £301.00
Class 2 Microphone Capsule
MK224 £634.00
Class 1 Microphone Capsule
MK216 Class 2 Microphone Capsule
£301.00
+VAT

Overview

These 1/2" prepolarised free field microphone capsules are suitable for use with professional grade Class 1 and Class 2 Sound Level Meters. Each capsule is supplied with a calibration chart.

All of the microphones in this range are based on the same technology, ensuring mechanical compatibility.

The microphones offer excellent long term stability and temperature stability, making them suitable for hand-held instruments as well as out-door long term noise monitors.

Cirrus Range Meters

Most of the Cirrus range of sound level meters, including the Optimus Yellow, Optimus Red and Optimus Green meters are supplied with either an MK224 or MK216 microphone capsule. These microphone capsules are also supplied with the Outdoor Noise Kits and Outdoor Microphone Systems.

MK224 Class 1 Microphone Capsule

The MK224 is a Pre-polarised Electret Condenser 1/2” Freefield Microphone

Nominal Sensitivity50mV/Pa ± 2dB
-26dB ± 2dB dB re 1V/Pa
Noise Floor<15 dB(A)
3dB PointsLow <8Hz, High >20kHz
Maximum Level146 dB for 3% Distortion
Equivalent capacity18.5 pF @ 250Hz
Equivalent volume42 mm3
Temperature coefficient0.005 dB/°C
Humidity coefficient0.003 dB/%RH
Pressure coefficient (250Hz)-0.004 dB/kPA
Stability1dB in 1 x 105 hours @ 60°C
1dB in 3 x 106 hours @ 20°C
Temperature Range-10°C to +50°C
Humidity Range0 to 100%RH
Magnetic Field<30dB equivalent SPL for 80A/m @50Hz
 
DimensionsIEC 61094-4 Type WS22F
Diameter12.6 mm with standard grill
Height17.2 mm with standard grill
Mounting Thread11.7 mm 60 UNS
Grill Thread12.7mm 60 UNS
VentingRear

MK216 Class 2 Microphone Capsule

The MK216 is a Pre-polarised Electret Condenser 1/2” Freefield Microphone

Nominal Sensitivity50mV/Pa ± 2dB
-26dB ± 2dB dB re 1V/Pa
Noise Floor<18 dB(A)
3dB PointsLow <10Hz, High >13.5kHz
Maximum Level145 dB for 3% Distortion
Equivalent capacity18.5 pF @ 250Hz
Equivalent volume42 mm3
Temperature coefficient0.005 dB/°C
Humidity coefficient0.003 dB/%RH
Pressure coefficient (250Hz)-0.004 dB/kPA
Stability1dB in 1 x 105 hours @ 60°C
1dB in 3 x 106 hours @ 20°C
Temperature Range-10°C to +50°C
Humidity Range0 to 100%RH
Magnetic Field<30dB equivalent SPL for 80A/m @50Hz
 
DimensionsIEC 61094-4 Type WS22F
Diameter12.6 mm with standard grill
Height17.2 mm with standard grill
Mounting Thread11.7 mm 60 UNS
Grill Thread12.7mm 60 UNS
VentingRear